package inner_Data;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class Open extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public Open() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here	`
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html;charset=utf-8");
		PrintWriter out = response.getWriter();
		out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>Servlet内部使用</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("这个Servlet并不是公开的，请不要直接访问。");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		try {
			Class.forName("com.mysql.jdbc.Driver");
		} catch (ClassNotFoundException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		Connection con=null;
		ServletContext application=getServletContext();
		try {
			con=DriverManager.getConnection(application.getAttribute("dburl").toString()+"", application.getAttribute("username").toString(), application.getAttribute("password").toString());
		} catch (SQLException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		String NodeID=request.getParameter("id");
		int id=Integer.parseInt(NodeID.substring(2));
		System.out.println("NoticeSystem-log：客户端ajax响应:");
		String sqls1="SELECT * FROM notice WHERE id="+id;
		Statement sm=null;
		try {
			sm=con.createStatement();
		} catch (SQLException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		ResultSet rs=null;
		try {
			rs=sm.executeQuery(sqls1);
		} catch (SQLException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		int len=0;
		try {
			rs.last();
			len=rs.getRow();
			rs.beforeFirst();
		} catch (SQLException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		if(len==0){
			response.setContentType("text/html;charset=utf-8");
			PrintWriter out = response.getWriter();
			out.print("[];',.error");
			out.flush();
			out.close();
			System.err.println("NoticeSystem-log：没有查询到相应记录！");
			return ;
		}
		String result=null;
		try {
			rs.next();
			result=rs.getString(5);
		} catch (SQLException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		System.out.println("NoticeSystem-log：数据库查询完毕，开始响应……");
		response.setContentType("text/html;charset=utf-8");
		PrintWriter out = response.getWriter();
		out.print(result);
		System.out.println("NoticeSystem-log：响应结果："+result);
		out.flush();
		out.close();
		System.out.println("NoticeSystem-log：ajax响应结束！");
		boolean isReaded=Boolean.parseBoolean(request.getParameter("isReaded"));
		if(isReaded==false){
			System.out.println("NoticeSystem-log：本条目未读，正在更新！");
			String sqls2="SELECT readed FROM notice WHERE id="+id;
			String username=request.getParameter("username");
			try {
				ResultSet rs2=sm.executeQuery(sqls2);
				rs2.next();
				String readed=rs2.getString(1);
				JSONObject jo;
				JSONArray ja;
				if(readed!=null && readed!=""){
					jo=JSONObject.fromObject(readed);
					ja=jo.getJSONArray("who_readed");
				}else{
					ja=new JSONArray();
				}
				JSONObject new_readed=new JSONObject();
				new_readed.accumulate("name", username);
				ja.add(new_readed);
				jo=new JSONObject();
				jo.accumulate("who_readed", ja);
				String sqls3="UPDATE notice SET readed='"+jo.toString()+"' WHERE id="+id;
				int result1=sm.executeUpdate(sqls3);
					if(result1==1){
						System.out.println("NoticeSystem-log：本条目未读，更新成功！");
					}else{
						System.out.println("NoticeSystem-log：本条目未读，更新失败！");
					}
			}catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			}
		}
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
